Deviant is much more forgiving about what it allows ... I don't know if there are any restrictions at all beyond legal ones, like child porn.

Yes, they do have strict rules (Loads of 'Policy' documents I actually read or skimmed through before finishing signing up), and a reporting system as well. Under-age nudity strictly forbidden, and 'adult' stuff needs to be flagged as 'not safe for work' or some such.

Not that I do any of that, but they do have rules, spelled out clearly.

I've now worked out my system how to cross-link between RedBubble and deviantArt for related images, and in place for the two I uploaded to DA so far. Gotta do some other stuff before I work out linking from YouTube - doing it the other way is easy from Redbubble: they have a special code for embedding a YT video.